In general, optical correlators can perform very fast signal processing. A header correlator is implemented as a hard-wired series of optical delay lines for which each header bit experiences a different optical delay. If a particular header bit has a corresponding "1" in the look-up table, then the delay will put that header bit inside an autocorrelation time window. If a header bit has a corresponding "0" in the look-up table, then the delay will put that header bit outside an autocorrelation time window. However, a key limitation is that the optical technology does not scale well, thereby making it practical for recognizing only a limited number of header bits. This may not be a significant drawback if only a few number of bits must be recognized in order to route packets to only a small number of ports.


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    Titel :

    All-optical signal processing for implementing network switching functions


    Beteiligte:
    Willner, A.E. (Autor:in)


    Erscheinungsdatum :

    2002-01-01


    Format / Umfang :

    158654 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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